Proceedings of the second world congress on ultrasonics in medicine, Rotterdam, 4-8 June 1973 / ed. by M. de Vlieger, D. N. White and V. R. McCreadyUltrasound in medicine and biology : proceedings of the second meeting of the World Federation for Ultrasound in Medicine and Biology [held in] Miyazaki, 22-27 July 1979 / ed. Toshio Wagai, Ryozo Omoto ; associate ed. V.R. McCreadySecond World Congress on Ultrasonics in Medicine, Rotterdam, 4-8 June 1973 : abstracts of papers / under the auspices of The Medical Faculty of the Erasmus University, Rotterdam, and The World Federation for Ultrasound in Medicine and Biology ; ed.: M. de Vlieger, D.N. White, V.R. McCready